Lowrider

You'll find an Object inside the car. After driving past a couple of cacti, you'll find a Sticker Spot on a sign in the foreground. Plant a Route 77 there to reveal 2 Stickers. After driving the car up several ramps to the top level, stop it just before going off the next ledge and jump off the car to grab an Object above. After exiting the first car, grab the 9 Costumes from the hut, below the Statue of Liberty.

Look at all those items above! You'll be able to reach them soon

At the first hydraulic equipped Hot Rod, have it bounce you to the hanging lights above and swing from one to the next for 3 Decorations. Use the 2nd Hot Rod to bounce into a small control room on the right, where activating a switch will open a door below. Go through that door to find a Sticker Spot--plant a Pink Blaster sticker there to reveal five items, including an Object, 2 Decorations, Audio Object, and a Sticker. Bounce off the third hot rod to another series of lights and swing from them for a Sticker and 2 Objects. Then swing from the far left light into the building on the left for a Material, then drop to the floor below for a Sticker. From the bottom floor of that building, leap to a traffic signal on the left, and work your way over to a crane. You'll gather 3 Stickers and 3 Objects along the way.

When you reach the second car you can drive, bounce off the hood to a ledge on the left and push the yellow box to cause two Stickers to drop, which you can now grab. Subsequently, bounce off the car again to grab a Key and 3 Objects (you'll have to move the car around a bit to reach them all). After driving that car to the end of the hall, perform a high bounce off the hood to grab a light high above, then use it to swing into a Material on the left. Now knock over the yellow wall, creating a ramp, and grab the Sticker from it. Now drive the car up the ramp and bounce off the hood to reach an Object at the top. Once past the next door, bounce off the car to a light above (to the right of the three electrical generators) and swing to a Material on the right. Then cross over the hanging car to a large wheel and grab the items spinning by above 3 Stickers, 2 Objects and 2 decorations.

Grab the Sticker from the trunk of the car, just past the two large wheels, then drop to a car below for an Object. When you reach the "2-Person" area, ride the moving car and jump around to gather 2 Objects, 3 Stickers, Material, and a Decoration in the area. Once you get your "new car," make sure to grab the object in the driver's seat, then plant a Pink Blaster sticker on the side of the car to reveal 4 Decorations. After the race, grab the Audio Object from behind your crashed car.